Tire and engine gauge



.HATE-REY TRUSTEE?, F SORTE MADERA, CLIFORNAS...

'ETRE HID ENGINE GAUGE.

implication filed January 3l, 1921. Serialv No. MHA-:06.-

le it 4known that We, Josemi if 'innert' and i'iiiinzr 'l`icrsir, citizens of the United States., residing et Corte Madera, in the county oi' Marin, State oit uliiorniii` here invented :i new und useful Tire und Engine Gauge., of which the "followingV is u specilicetion in such full nud clenr terms ns will enable those skilled in the nrt to eonetruct :ind use the suine. i

' invention relates to :i gauge ter dei the pressure carried in pneumatic "nd also for the purpose o? detern1in inw the roinpressioix oi' the several rylindcrs is engine.

Yit will he understood by those skilled iu that is frequently necessary to the vulves oi' nu engine when they ri`his wort: can oni)Y be by u skilled pr-rsoin und is usually ne by guess. ull oi die vnires being `ground ienefer they :ippenr to be pitted enough to require it. ffi'th the :iid oi' the present invention "inch unneressiiry labor is eliiniH .il hated und ne vulves nre ground only when it iiipeurs int the individual cylinder has it .should here. it also determine whether the troni :my other than n, rer ir the vulves are properly' und und the cylinder still leaks, the loss :sion must be traced to some other la lost the coiupreesion posmble 'to threads outside one end to plug openingi und it has n. rubber washer 'to permit it to be used to test the pressure in the. tires thereby iufcoxnplishing' two objerts with the single instrument.

Other objects of the invention Will appear ns the de:-criptioii proceeds. i

An einluuliuient oi' the invention is shown rig spor-lr plug.

Fig. 3 is n side elevation oi' n mugre hui'- ing e. 'le threiided bushing theipon to erinnert u'.

with the engine. iliie pressuretesting apparatus proper romp-rises un onen outer rylnidrieul snr-li l provided 'with a flange 2 and a. crimped portion 3.- "lhe shell i is provided withy internal threads at 4. Slidable Within thelshell is er cylinder 5 having a gasket 6 at one' end 60 l2 arranged to produce an air tight joint 70 Ywith the outer shell 1. The end of the spring il at the open end of the cylinder 9 is connected to a. stud 12% which has n pin 14 for depressingI the valve stem of :i tire tube.

'lhe stud 13 isy connected to an exteriorly 75 threaded Washer l5 which has openings therein. Secured against the washer or ring l5 is u Het threaded Washer 16 which forms :i foundation for e gum rubber gasket 17 the latter beingr held in place by the threaded Washer or ring 18. rlhe rubber gasket l? is used for thepurpose of testing the pressure in tires. rEhe tension on the spring 1l may be regulated by turning the threaded pin lst. v

ln order to permit the gauge to be `used for testing the engine pressures the gauge is secured to the bushing 20," which has threads to correspond with the threads of the spark plug openings of the engine, by means of the thrended bushing 21 which bears on and nuikes an air tight joint with the dang@ 2.

It inode up specially for the purposes herein outlined the gauge may be made so as f'to dispense with the bushing 20 shown in 95 Fig'. 2. ln this Jform of the invention the @ruige is precisely the same as in the other 'lorni oi' the invention, the outer shell being;` shown at 25 und the. numbered indicator cylinder at 2G the cylinder 25 being crimped 100 in at 2T to hold the indicator cylinder in place. Pressed tightly over the shell 25 is a bushing` 28 which is threaded to tit any openingr into the engine cylinder.

.ln operation the gauge is pushed down over the. end of e tire stein whereupon the. indicator shell'is raised to a height to correspond with the pressure applied thereto. 'ihe criinps il und 2T prevent the shells 5 und 2&3 from being forced out of their con- 110 miners. it the gunges to be lapplied to an engine the spiirk'plug is removed from one aziitgntion or not a What We 01mm 1s as follows, but various modxdawns may be made m :the construc- @on shown in tha drawing?, n nd :above par@ `tlrsuxezlily described zfom, Withmthe purvifsw of om invention: l

A pressure tester comprising imcmrv @hgemded bushmg, a ubulm shell .appma set our handig wh day ci; Dam, A 

